import http from 'http';
import fs from 'fs/promises';
import url from 'url';
import path from 'path';


const _filename = url.fileURLToPath(import.meta.url);
const _dirname = path.dirname(_filename);

console.log(_dirname,_filename);

const PORT = process.env.PORT;

const server = http.createServer(async(req, res) => {


try {
    if (req.method === 'GET') {
        let filePath;
    if (req.url === '/') {
        filePath = path.join(_dirname,'public','index.html');
    } else if (req.url === '/about') {
        filePath = path.join(_dirname,'public','about.html');
    }else {
       res.writeHead(404,{'Content-Type': 'text/html;charset=utf-8'});
       res.end('<h1>页面未找到</h1>');
       return;
    }

    const data = await fs.readFile(filePath);
    res.setHeader('Content-Type', 'text/html;charset=utf-8')
    res.writeHead(200);
    res.end(data);

}else{
    res.writeHead(400,{'Content-Type': 'text/html;charset=utf-8'});
    res.end('<h1>非法请求</h1>');
}
}catch (error){
    console.log(error);
    res.writeHead(500,{'Content-Type': 'text/html; charset=utf-8'});
    res.end('<h1>服务器错误</h1>');
}

});

server.listen(8000,() => {
    console.log("服务器已启动，监听端口8000");
});